Documentation: Update index.md and move files

* Add more subdirectories and index.mds.
* Move "getting started" and "lessons" into sub-directories.
* Move "NativeRaminit" into northbridge/intel/sandybridge folder.
* Move "MultiProcessorInit" into soc/intel/icelake folder.
* Reference new files

Change-Id: I78c3ec0e8bcc342686277ae141a88d0486680978
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/26262
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/soc/index.md b/Documentation/soc/index.md
new file mode 100644
index 0000000000..ca50dc85fb
--- /dev/null
+++ b/Documentation/soc/index.md
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+# SOC-specific documentation
+
+This section contains documentation about coreboot on specific SOCs.
+
+## Vendor
+
+- [Intel](intel/index.md)